Shumujong™ (digitz mahjong)

Shumujong™ is your chance to play new addicting puzzle of mahjong type. The rules of usual mahjong were taken as basis. Your task is to clear the playfield making necessary sum of digits on the tiles. But be attentive! The tile has to have at least one big side open in order to be selected. You can use any digits to make up the needed number. For example, match 3 and 7, or 5, 4 and 1 to make 10. Try this unusual multiplayer puzzle cocktail!